| Description | Date | Identifier | |
| Letter querying the suitability of a 1934 La Salle Saginaw steering gear against a Phantom II's front axle weight, and requesting helix angle data for Cadillac and La Salle steering cams. | 19th Nov 1934 | Box 170 \ 2 img209 | |
| Night letter cablegram to Cadillac Motor Company regarding the helix angle on a Cadillac 16 steering gear worm. | 19th Nov 1934 | Box 170 \ 2 img210 | |
| Cablegram from Detroit to Derby requesting steering design choice, referencing Cadillac Sixteen or Buick/LaSalle models. | 26th Nov 1934 | Box 170 \ 2 img211 | |
| The steering systems of Cadillac and LaSalle cars, referencing a Mr. Olley. | 26th Nov 1934 | Box 170 \ 2 img212 | |
| With sketches comparing T-slot and Trans-Slot piston designs, materials, and performance. | 9th Nov 1934 | Box 170 \ 2 img213 | |
| Note on engine bores, pistons, cold knocking, and oil consumption. | 9th Nov 1934 | Box 170 \ 2 img214 | |
| Summary of observations on cam ground, aluminium, and trans-slot pistons. | 9th Nov 1934 | Box 170 \ 2 img215 | |
| And a diagram concerning engine and chassis components. | 27th Nov 1934 | Box 170 \ 2 img216 | |
| Notes on piston designs, materials, and performance from America, comparing 'T' slot and 'Trans-slot' types. | 27th Nov 1934 | Box 170 \ 2 img217 | |
| Engine cold knocking, piston types, oil consumption, and cylinder bore issues. | 27th Nov 1934 | Box 170 \ 2 img218 | |
| Technical memo discussing piston design, V.8 manifolds, and shock absorbers. | 27th Nov 1934 | Box 170 \ 2 img219 | |
| Cablegram comparing Cadillac and LaSalle steering characteristics, recommending a front stabilizer to reduce wheel fight. | 1st Dec 1923 | Box 170 \ 2 img220 | |
| Specifications and sourcing of a steering system for the Spectre model, comparing it to Cadillac and La Salle systems. | 3rd Dec 1934 | Box 170 \ 2 img221 | |
| Cablegram to the Cadillac Motor Company concerning steering helix angle specifications. | 3rd Dec 1934 | Box 170 \ 2 img222 | |
| Continuation page for information about a stabiliser. | 7th Dec 1934 | Box 170 \ 2 img223 | |
| Forwarding a note received from Olley, suggesting the information is worth following up. | 7th Dec 1934 | Box 170 \ 2 img224 | |
| Letter from Maurice Olley advising on front stabiliser placement and stiffness to improve vehicle handling. | 25th Nov 1934 | Box 170 \ 2 img225 | |
| Memo detailing suspension and handling improvements based on test results. | 25th Jan 1934 | Box 170 \ 2 img226 | |
| Correspondence about steering troubles, a new steering gear, and a front stabilizer. | 10th Dec 1934 | Box 170 \ 2 img227 | |
| Letter to M. Olley at Cadillac Motor Car Co. discussing pistons, steering, and suspension systems. | 10th Dec 1934 | Box 170 \ 2 img228 | |
| Technical report comparing the performance and issues of a Buick Series 40 and a Cadillac. | 10th Dec 1934 | Box 170 \ 2 img229 | |
| The end of a letter with festive wishes and mention of upcoming travel to the States. | 10th Dec 1934 | Box 170 \ 2 img230 | |
| Graph of pressure face diameters given by standard cam forms for a No. 14 cam. | 10th Dec 1934 | Box 170 \ 2 img231 | |
| Graph plotting the reduction of diameter against degrees from the major axis. | 17th Dec 1934 | Box 170 \ 2 img232 | |
| Report to Cadillac on vehicle performance after 6,000 miles, highlighting issues with suspension and bearings. | 17th Dec 1934 | Box 170 \ 2 img233 | |
| Night letter cablegram to Cadillac Motors reporting the failure of all Cadillac gudgeon pin bushes and requesting replacements. | 19th Dec 1934 | Box 170 \ 2 img234 | |
| Cover letter to M. Olley at Cadillac Motor Car Co. regarding a Cadillac Bush. | 19th Dec 1934 | Box 170 \ 2 img235 | |
| Letter to Cadillac regarding vehicle suspension and engine issues during testing. | 15th Jan 1935 | Box 170 \ 2 img236 | |
| Letter discussing the performance of the car body, road springs, and damping. | 15th Jan 1935 | Box 170 \ 2 img237 | |
| Routing slip for a letter from Mr. Olley and a paper on tyres by Mr. Evans. | 1st Feb 1935 | Box 170 \ 2 img238 | |
| Letter from Cadillac discussing steering gear and the advantages of a front stabilizer. | 12th Jan 1935 | Box 170 \ 2 img239 | |
| Analysis of the effects of a front stabilizer on vehicle handling, steering, and tire wear. | 12th Jan 1935 | Box 170 \ 2 img240 | |
| Technical analysis of front stabilizers, cornering power, and tire wear on vehicles. | 12th Jan 1935 | Box 170 \ 2 img241 | |
| LaSalle steering systems, gear load capacity, bearing efficiency, and handling stability. | 12th Jan 1935 | Box 170 \ 2 img242 | |
| Technical analysis of vehicle handling stability, slip angles, and the effects of gyroscopic shocks. | 12th Jan 1935 | Box 170 \ 2 img243 | |
| Analysis of factors causing wheel shimmy and recommendations for improvement. | 12th Jan 1935 | Box 170 \ 2 img244 | |
| Engine oil specifications, potential causes for wristpin bushing issues, and the quality and future of brake systems. | 12th Jan 1935 | Box 170 \ 2 img245 | |
| Letter from Maurice Olley discussing shackles, shocks, and steel rings. | 11th Jan 1935 | Box 170 \ 2 img246 | |
| Blueprint diagram illustrating the principles of vehicle handling stability. | 11th Jan 1935 | Box 170 \ 2 img247 | |
| Two graphs illustrating the relationship between self-aligning torque, slip angle, load, and camber. | 11th Jan 1935 | Box 170 \ 2 img248 | |
| Blueprint diagram illustrating the crankcase ventilation system for 16 CAD. | 11th Jan 1935 | Box 170 \ 2 img249 | |
| Blueprint comparing original and present steering gear designs. | 11th Jan 1935 | Box 170 \ 2 img250 | |
| Graph illustrating the cornering power of a tire in relation to load, camber, and slip angle. | 11th Jan 1935 | Box 170 \ 2 img251 | |
| Diagram illustrating the geometry of a slip angle. | 11th Jan 1935 | Box 170 \ 2 img252 | |
| Four graphs illustrating tire performance characteristics including cornering force, power, and coefficient. | 11th Jan 1935 | Box 170 \ 2 img253 | |
| Series of four graphs illustrating factors affecting tire cornering power. | 11th Jan 1935 | Box 170 \ 2 img254 | |
| Four graphs analyzing precession and static torque against slip angle, radial load, and offset. | 28th Feb 1935 | Box 170 \ 2 img255 | |
| Letter to Cadillac Motor Car Co. discussing initial spring deflection calculations. | 28th Feb 1935 | Box 170 \ 2 img256 | |
| Letter to Cadillac Motor Car Co. discussing bearing lubrication issues and material choices. | 6th Mar 1935 | Box 170 \ 2 img257 | |
| Query regarding the superior gear grinding process and machinery used for the Cadillac gearbox. | 6th Mar 1935 | Box 170 \ 2 img258 | |
| Letter to Cadillac detailing the findings from the teardown of one of their cars after a run in France. | 8th Apr 1935 | Box 170 \ 2 img259 | |
| Letter discussing vehicle condition, gearbox information, company prosperity, and the horsepower tax. | 4th Apr 1935 | Box 170 \ 2 img260 | |
| The condition of a Cadillac engine after 20,000 miles. | 5th Apr 1935 | Box 170 \ 2 img261 | |
| Inspection report detailing wear on the camshaft & auxiliary drive, front wheel suspension, and rear road springs. | 5th Apr 1935 | Box 170 \ 2 img262 | |
| Incorporating Cadillac gearbox information, specifically 45° helix angle gears, into the next Spectre gearbox. | 26th Apr 1935 | Box 170 \ 2 img263 | |
| Letter from Cadillac Motor Car Company discussing the design of silent transmission gears, particularly helical gears. | 17th Apr 1935 | Box 170 \ 2 img264 | |
| Inter-office memo discussing the manufacturing processes and improvements for LaSalle transmission gears. | 10th Apr 1935 | Box 170 \ 2 img265 | |
| Conclusion of an inter-organization letter discussing methods for making quiet transmission gears. | 10th Apr 1935 | Box 170 \ 2 img266 | |
| Inter-organization letter detailing production methods for making Cadillac transmission gears. | 2nd Apr 1935 | Box 170 \ 2 img267 | |
| Inter-organization letter from Cadillac Motor Car Company discussing gear tooth relief, rotary lapping, and practices for LaSalle transmissions. | 2nd Apr 1935 | Box 170 \ 2 img268 | |
| Blueprint of a geared shaft showing the forward and coast driven sides of the teeth. | 2nd Apr 1935 | Box 170 \ 2 img269 | |
| Blueprint detailing specifications and driving sides for counter shaft gears. | 2nd Apr 1935 | Box 170 \ 2 img270 | |
| Blueprint showing a cutaway view of geared components and their engagement. | 2nd Apr 1935 | Box 170 \ 2 img271 | |
| Isometric cutaway drawing of several interlocking gears and shafts. | 2nd Apr 1935 | Box 170 \ 2 img272 | |
| Blueprint with specifications for modifying helical gear teeth to control contact patterns. | 21th Jan 1932 | Box 170 \ 2 img273 | |
| Blueprint from Cadillac Motor Car Co. showing gear tooth contact and rotation direction. | 21th Jan 1932 | Box 170 \ 2 img274 | |
| Letter to Cadillac Motor Co. regarding the poor performance and friction issues of tested Marles Steering Gears. | 29th May 1935 | Box 170 \ 2 img275 | |
| Letter inquiring about the theory of friction and the crowning of tracks. | 29th May 1935 | Box 170 \ 2 img276 | |
| Letter from Cadillac describing their method and advantages for conducting torsional tests for frame stiffness. | 2nd Jul 1935 | Box 170 \ 2 img277 | |
| Procedure for the torsional stiffness testing of a vehicle frame. | 2nd Jul 1935 | Box 170 \ 2 img278 | |
| Frame and body stiffness tests, with comparative data from a 1935 Ford Sedan and a 1934 Olds 8 Sedan. | 2nd Jul 1935 | Box 170 \ 2 img279 | |
| Technical discussion on vehicle frame stiffness for sedan and soft-top models, comparing different construction methods and their effects. | 2nd Jul 1935 | Box 170 \ 2 img280 | |
| Concluding page of a letter or report signed by Maurice Olley. | 3rd Jul 1935 | Box 170 \ 2 img281 | |
| Hand-drawn graph comparing frame stiffness and resonance against frequency and amplitude. | 3rd Jul 1935 | Box 170 \ 2 img282 | |
| Diagram illustrating the method for testing the torsional rigidity of a vehicle frame. | 4th Aug 1935 | Box 170 \ 2 img283 | |
| Diagram illustrating the third method for the torsional rigidity test of a frame. | 4th May 1925 | Box 170 \ 2 img284 | |
| Graph plotting Lbs. Feet against Degrees from the 3rd test of a Chrysler Impl component with DRS closed. | 25th Jul 1934 | Box 170 \ 2 img285 | |
| Cover note forwarding a copy of a note from 'Oy' for action. | 16th Jul 1935 | Box 170 \ 2 img286 | |
| Letter from Cadillac Motor Car Company regarding steering gear characteristics and comparisons. | 28th Jun 1935 | Box 170 \ 2 img287 | |
| Analysis of wheel fight and the causes of low-speed wabble, including testing methods. | 28th Jun 1935 | Box 170 \ 2 img288 | |
| Technical letter detailing the causes and cures for wheel wabble and wheel fight. | 27th Aug 1935 | Box 170 \ 2 img289 | |
| Letter to Cadillac discussing frame stiffness, sending test results, and asking for an opinion on cross-member positioning. | 27th Aug 1935 | Box 170 \ 2 img290 | |
| Query regarding air locks and leakage in Delco shock dampers as used on the Cadillac V.16. | 27th Aug 1935 | Box 170 \ 2 img291 | |
| Letter to M. Olley of Cadillac regarding colleagues visiting Detroit and requesting assistance. | 31th Oct 1935 | Box 170 \ 2 img292 | |
| Letter from Cadillac Motor Car Company regarding the Phantom III chassis and wishbone suspension. | 12th Nov 1935 | Box 170 \ 2 img293 | |
| Letter to the Cadillac Motor Car Company regarding manufacturing, the Phantom III, and Girling Brakes. | 27th Nov 1935 | Box 170 \ 2 img294 | |
| Letter to the Cadillac Motor Car Company detailing the specifications and use of a bumper test rig. | 8th Jan 1936 | Box 170 \ 3 img001 | |
| The life and failure rates of chassis components like road springs, shock dampers, axles, and cams during testing. | 8th Jan 1936 | Box 170 \ 3 img002 | |
| Letter discussing bump-rig testing, shock absorber boiling, and the pre-settling of torsion rods. | 25th Jan 1936 | Box 170 \ 3 img003 | |
| Stress-strain diagrams, the effects of cold working, and torque analysis in shafts. | 4th Dec 1935 | Box 170 \ 3 img004 | |
| Analysis of stress, force, and torque diagrams for a shaft operating beyond its elastic limit. | 4th Dec 1935 | Box 170 \ 3 img005 | |
| Mathematical analysis and calculations for torsional stress in a rod. | 4th Dec 1935 | Box 170 \ 3 img006 | |
| Conclusions on the elastic limits and stresses of high-grade spring steel and coil springs, with relevant formulas. | 4th Dec 1935 | Box 170 \ 3 img007 | |
| Sketched graph showing the probable effect of cold working on a shaft, plotting torque against wind-up angle. | 30th Jan 1936 | Box 170 \ 3 img008 | |
| Letter to M. Olley at Cadillac requesting information on American cast-iron casting techniques and Chevrolet cylinder head weights. | 30th Jan 1936 | Box 170 \ 3 img009 | |
| Night letter cablegram to Cadillac Motors regarding the use of water to cool shock absorbers on a bumper rig. | 6th Feb 1936 | Box 170 \ 3 img010 | |
| Letter from Cadillac discussing steering difficulties and wobble characteristics in various suspension types. | 26th Feb 1936 | Box 170 \ 3 img011 | |
| Steering mechanisms for wishbone and Dubonnet suspensions, and the performance of LaSalle gears. | 25th Feb 1936 | Box 170 \ 3 img012 | |
| Notes on steering, detailing the analysis of two types of wheel fight observed during testing. | 25th Feb 1936 | Box 170 \ 3 img013 | |
| Taming wheel wobble frequency by adjusting steering and suspension systems. | 25th Feb 1936 | Box 170 \ 3 img014 | |
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